L0109NEAP TRIAC Equivalent & Substitute Parts

Part Overview

The L0109NEAP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 800 V off-state voltage and 1 A on-state current in a Through Hole TO-92 package. This component is Active status and widely used in AC switching and control applications. Equivalent and substitute parts are identified based on matching electrical characteristics and package compatibility to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA
Current - Hold (Ih) (Max)	10 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the L0109NEAP are qualified based on the following criteria:

Triac Type: Logic - Sensitive Gate
Voltage - Off State: 800 V
Current - On State (It (RMS)) (Max): 1 A
Voltage - Gate Trigger (Vgt) (Max): 1.3 V
Operating Temperature: -40°C ~ 125°C (TJ)
Mounting Type: Through Hole
Package / Case: TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status: ROHS3 Compliant

Substitutes are categorized as MFR Recommended or Parametric Equivalent based on gate trigger current (Igt) and hold current (Ih) specifications. All substitute parts maintain the core electrical ratings and environmental compliance of the main part.

Parameter Comparison

Parameter	L0109NEAP (Littelfuse)	Z0103NA 2AL2 (STMicroelectronics)	Z0107NA 5AL2 (STMicroelectronics)	Z0109NA 2AL2 (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	800 V	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	1 A	1 A	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA	3 mA	5 mA	10 mA
Current - Hold (Ih) (Max)	10 mA	7 mA	10 mA	10 mA
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the L0109NEAP. Selection between MFR Recommended and Parametric Equivalent substitutes depends on circuit requirements for gate trigger current sensitivity:

Z0109NA 2AL2 (Parametric Equivalent) matches the L0109NEAP gate trigger current specification at 10 mA maximum, providing direct functional equivalence with identical hold current characteristics.

Z0103NA 2AL2 (MFR Recommended) features reduced gate trigger current at 3 mA maximum and reduced hold current at 7 mA maximum, suitable for applications requiring lower gate drive requirements.

Z0107NA 5AL2 (MFR Recommended) provides intermediate gate trigger current at 5 mA maximum while maintaining the 10 mA hold current specification, offering a middle-ground option for gate sensitivity requirements.

All substitute parts are qualified for the same operating temperature range and through-hole mounting configuration as the main part.

Frequently Asked Questions (FAQ)

Q: Can Z0103NA 2AL2 be used as a direct replacement for L0109NEAP?

A: Z0103NA 2AL2 is a MFR Recommended substitute with matching core electrical ratings (800 V, 1 A, 1.3 V gate trigger voltage). However, it features lower gate trigger current (3 mA vs. 10 mA) and lower hold current (7 mA vs. 10 mA). Substitution is valid where circuit design accommodates reduced gate drive requirements.

Q: What is the difference between Z0109NA 2AL2 and L0109NEAP?

A: Z0109NA 2AL2 is a Parametric Equivalent with identical electrical specifications including gate trigger current (10 mA) and hold current (10 mA). The primary difference is manufacturer (STMicroelectronics vs. Littelfuse) and packaging format (Cut Tape vs. Tape & Box).

Q: Are all substitute parts compatible with the same PCB footprint?

A: All substitute parts use Through Hole TO-92-3 or TO-226-3 package configurations with formed leads, maintaining mechanical compatibility with L0109NEAP PCB layouts.

Q: Do substitute parts meet the same compliance requirements?

A: All substitute parts are ROHS3 Compliant and REACH Unaffected, matching the regulatory compliance profile of the L0109NEAP.

Q: Which substitute should be selected for lowest gate drive current requirement?

A: Z0103NA 2AL2 features the lowest gate trigger current specification at 3 mA maximum, suitable for applications with minimal gate drive capability.

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